Photographic washing-tank



(No Model.) v G; R. PERKINS.

,PHOTOGRAPHIG WASHING TANK.

l YIIVVEIVTOH YBY nrromvs ys.

Patented June 16, 1896'.

U iT D STATES PATIENT OFFICE.

R. PERKINS, OF SGHU-YLER, 'NEBRASKA.

-PHOTOG nAPHlo WAS H.lN G-'1AN K.

SPECIFICATION forming part of Letters Patent No. 562,239, dated June 16,18 96.

Application filed February 15,1896. Serial lit-579,425. on an.)

of Nebraska, have invented, a new and Improved Washer for PhotographicNegatives,

of which-the,following isa full, clear,- and .ex'act description.

The object of. t1re .invent1on is to provide a new'and,improved portablewasher-for photowashing the developed negative-plates, and.

enn -m t withoet.r a is ng wel plates. 'on}.-zconsists.-

g the was to. d efterzw s.

he inter mbe s ha ing: an .ma ie ly orenius matte g": dapted o eo ta i$.a1. rash- 3 x vat e np-uly tQ ai-d: boa

will be fully described..hereinfafterand then p sd 'qetainifl s aims- TReference is to be had to the accompanying drawings, forming apart ofthis s'pecification, in which similar characters of reference indicatecorresponding parts in all the figures. I

Figure 1 is a sectional side elevation of the washer. Fig. 2 is asectional plan view of the same on the line 2 2 of Fig. 1, and Fig. 3 isa sectional side elevation of the overflow for the wash-box on the line3 3 of Fig. 2. a

The improved device is provided with a wash-box-A and a water-supplytank B, having an outlet 0, adapted to discharge water into saidwash-box A, as indicated in the drawings. The amount of water passingthrough the outlet 0 into the wash-box A is regulated by a needle-valveD, held to slide vertically and mounted on a float E, adapted to riseand fall with the water in the washbox A.

the outlet 0, and the lower end thereof is guided in a bracket F, heldon the rear'wall of the box A. In the latter is adapted to he set-a rackG, of any approved construction, and adapted to support in a verticalposition the exposed negative-plates H, to be washed by the waterpassing through the wash-box PERkiN's, of

g .of the imaging.ideas:

nd an autoe nega ive-Pl e t be wa te-am se eet alve 'wsr im r The-iavsni nal.aqeesis s ofj r tar s, and-zcletails aedcqm a i s f h ame; as

The upper end of the valve D extends into A. I The rack-G is preferablymade witlrcorrugated sides made step-like, as ind icated in Fig; 2,seats to accommodate negative-plates of various sizes. j v

. In one of the corners ofthe box A, prefer-' ably 'at'the front, isarranged an overflow I,

1 .made in sucha manner that the waterenters f the overflow at the'bottom'of the box, to prevent freshwater froin'being drained oifby theI v overflow, and to cause the impure water-that is, that which haspassed over theplate's HP-lJO'f 'be drawn oifas fresh water enters atthe out- .'vided withinnei fand outer channels I: I '(see' Fig-3,)" ofwhich the innerchannel I "extends' 1 from the top of thdbox to within ashort disf tance' of thejbottoln thereof, and its upperend connects withthe u per end of the chane 7o nel l' whichfopensfat its lower end to theoutsi eof e-box, to discharge he Waterinto a pail J, set below thewash-box AL I In order to drain the wasl 1 -box A of a'l l the,"

are ivas'hed,"I provide the followingdevice': In thesupply-tank B isarrangeda float K, connected by a link Lavith a' lever N; fulcru'med; onthe top edge of the tank, and limited in its swinging motion bya stop0,,so as 8 to hold the float-K normally in an uppermost position; thatis, as long as water is in the tank B. The outer end of the lever N ispivotally connected by a cord or rope P with a valve Q, normally seatedon the outlet R, ar-

ranged in the bottom ofthcbox A, and situated directly over the pail J,so that when all the water is discharged from the tank B the float Ksinks, and in doing so imparts a downward-swinging motion to the innerend of the lever N and an upward-swinging motion to the outer end ofsaid lever, whereby the cord or rope P lifts the valve Q oft its seat toopen the outlet R. The water contained in the box A is now drained citthrough said outlet 5 B into the pail J. 1

In using the device, the rack G, filled with the plates H, is set in thewash-box A and the latter and the tank B are filled with water. ThefloatE in the form' of a cork is adjust- 10o ably held on the valve D, sothat the amount of water dripping through the outlet 0 past the valve Dcan be regulated to any desired degree. Now, as the water rises in thewash-- liquid:contained, tlierein afterthe'plates 'lifyg in the sides ofthe box and is'provided with combination-witha reservoir having an out-3 5 let, of a wash b ox belowthe outlet of the reser .80

box A to within ashort distance of the upper be seen that by thisarrangement fresh Water flows into the wash-box A from the tank Bcontinuously for a desired length of time, to insure a proper, washingof the plates II, it being understood that the impure or wash water isdrained off by the overflow I into thepail J. \Vhen the tankB isnearly-empty, the float K commences to sink, and in doing so finallylifts the valve Q oif its seat,wl1ereby all the water from the wash-boxA is discharged through the outlet R into the pail J. Thus the washedplates H can remain in the box A until they are completely dry, it beingunderstood that the draining of the water from the box A is automatic,and consequently the plates need not be disturbed or removed from thebox A until they'are completely dry.

In order to make the apparatus portable and to readily set the same upfor use whenever required, I provide a packing-box S, in which the box Aand tank B, as well as the other .parts, can be stored when not in useThis box S is adapted to support at its top the tank 13, as shown, partofthe front side being made in the form of a hinged door T, adapted tobe swung downward into a horizontal position, so as to form a shelf forthe wash-box A. This door T is fulcrumed at T rearwardly-extendingarms'T adapted to ,abu t'against the under side of stopsS, seclu'ied tothe inside of the box to hold the door in a horizontal position.

hen not in use, the

door T is closed to form a continuation of the side of the box. I

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent l. A photographic washing-tank, comprising awash-box having an outlet and prox ided with an overflow, a reservoirfor supplyin and described.

water to the wash-box, a valve for closing the outlet of the wash-box,and means for automatically opening. the valve to empty the wash-boxwhen the reservoir is emptyfor nearly so, substantially as described.

2. A photographic washing-tank, comprisin g a wash-box having an outletin its bottom and provided with an overflow, a reservoir for supplyingwater to the wash-box, a ,valve for closing the outlet of the waslhbox,a float in the, reservoir, anda connection between the float and valvefor operating thedattor from the former when the reservoir is empty ornearly so,'substautially as described.

3. A photographic washing-tank, comprisin g a wash-box having an outletin its bottom ply of waterfrom the reservoir to said box, 6 5

a valve for closing the o'utlet'of the wash-box, a heat in thereservoir, and a connectionbetween the float and the valve in the outletof the wash-box, substantially-"as hereinshown 4. In a hotograh;ivasinghhk, the

combination with a reservoir having an outlet in its lower portion, of;a wash-box arranged under the Quiet and provided with an over flow,aneedle-valvehavin g guided movement I in the wash-box',and a float onthe said valve,

substantially as described. 5. In a photographic washing-tank, the

voir and having an outlet'in its bottom and provided with an overflow, avalve in the outlet of the wash'-box,a float in the reservoir, andapivoted lever having one end connected with the float and the other endwith the valve, 8 5

